Isn't this the feature that Steele and Stallman were working on, in Guy Steele's example of extreme pair programming. http://cycle-gap.blogspot.com/2007/09/ext

Isn't this the feature that Steele and Stallman were working on, in Guy Steele's example of extreme pair programming. http://cycle-gap.blogspot.com/2007/09/extreme-pair-programming-guy-steele-and.html http://cycle-gap.blogspot.com/2007/09/extreme-pair-programmi...